CN211938994U

CN211938994U - Low-pressure casting die for beam casting

Info

Publication number: CN211938994U
Application number: CN202020314552.0U
Authority: CN
Inventors: 汪浩
Original assignee: Chuzhou Zhichuang Mould Material Co ltd
Current assignee: Chuzhou Zhichuang Mould Material Co ltd
Priority date: 2020-03-14
Filing date: 2020-03-14
Publication date: 2020-11-17
Anticipated expiration: 2030-03-14

Abstract

The utility model discloses a crossbeam foundry goods low pressure casting mould, including mould frame, last mould, bed die and material bucket, the material bucket is located the setting of mould frame bottom, and the inside conveying pipeline that is provided with of material bucket, conveying pipeline top and the inside being linked together of bed die, material bucket one side is provided with the intake pipe, and its opposite side is provided with the pressure release pipe, all be provided with first governing valve between intake pipe and the pressure release pipe both ends, a plurality of cooling hole has all been seted up to inside being located between both ends of bed die, the inside a plurality of post piece that is provided with of cooling hole, the equal threaded connection in cooling hole both ends has the pipe connection. The utility model discloses a cool off the bed die to the hot-air that will produce is discharged into material inslot portion as compressed air, is favorable to preventing the higher thermal fatigue that produces of bed die temperature, leads to the work piece to damage, and the compressed air temperature that prevents to get into the material bucket is lower, leads to the heat loss to produce the energy extravagant.

Description

Low-pressure casting die for beam casting

Technical Field

The utility model relates to a mould equipment technical field, in particular to crossbeam foundry goods low pressure casting mould.

Background

The casting mold is used for obtaining the structural shape of the part, other easily-formed materials are used for forming the structural shape of the part in advance, then the part is placed into the mold, a cavity with the same structural size as the part is formed in the sand mold, then the fluid liquid is poured into the cavity, and the part with the same structural shape as the mold can be formed after the fluid liquid is cooled and solidified. The casting mold is an important ring in the casting process, and the low-pressure casting mold adopts low pressure to press materials into the mold, so that a workpiece is cast by using a low-pressure forming mode.

However, in the process of low-pressure casting, the used materials are all material liquids obtained after high-temperature melting as workpiece raw materials, so that in the casting process, a mold is overheated to generate thermal fatigue, and the workpiece is damaged or a forming error is generated.

Therefore, it is necessary to invent a low-pressure casting mold for beam castings to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a crossbeam foundry goods low pressure casting mould is through cooling off the bed die to discharge the hot-air that produces into the material inslot portion as compressed air, be favorable to preventing the higher thermal fatigue that produces of bed die temperature, lead to the work piece to damage, and the compressed air temperature that prevents to get into the material bucket is lower, lead to the heat loss to produce the energy extravagant, with the problem of proposing in solving above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a low-pressure casting die for a beam casting comprises a die frame, an upper die, a lower die and a material barrel, wherein the material barrel is arranged at the bottom of the die frame, a material conveying pipe is arranged in the material barrel, the top of the material conveying pipe is communicated with the interior of the lower die, one side of the material barrel is provided with an air inlet pipe, the other side of the material barrel is provided with a pressure relief pipe, first adjusting valves are arranged between the two ends of the air inlet pipe and the pressure relief pipe, a plurality of cooling holes are formed in the lower die and positioned between the two ends of the lower die, a plurality of column blocks are arranged in the cooling holes, the two ends of each cooling hole are in threaded connection with a gas pipe connector, nylon sealing rings are arranged on one side of each gas pipe connector and the side of the lower die, a cooling gas pipe is inserted into one side of each gas pipe connector positioned outside the cooling, be provided with first sealing washer between the inside and the pipe connection of spiral shell, the cooling pipe is located the inside one end of spiral shell and sets up for the disc, and be provided with the second sealing washer between the spiral shell, a plurality of cooling pipe that the bed die is close to intake pipe one side is connected with same house steward of giving vent to anger, house steward one end of giving vent to anger is linked together with the intake pipe, and has set gradually relief valve and second governing valve from the top down between the same, a plurality of cooling pipe that the bed die is close to pressure release pipe one side is connected with same cooling house steward, from the top down has set gradually filter and cooling blower between the cooling house steward.

Preferably, liquid materials are contained in the material barrel, the air inlet pipe and the pressure relief pipe are both arranged above the liquid level of the liquid materials, and one end of the bottom of the material conveying pipe is arranged below the liquid level of the liquid materials.

Preferably, the relief valve includes the casing, the inside slip of casing is provided with the plunger, be connected with the spring between plunger and the casing one end, and the casing both sides have all been seted up and have been lost air the hole.

Preferably, the shape of the column block is cylindrical, and the diameter size of the column block is smaller than 1/2 of the diameter size of the cooling hole.

Preferably, the air outlet main pipe and the front section of the air inlet pipe, which is located on the first regulating valve, are connected, and the inner diameter of the air outlet main pipe is smaller than that of the air inlet pipe.

Preferably, the second regulating valve is a one-way valve, and the direction of the second regulating valve is towards the flowing direction of the air inlet pipe, and the second regulating valve is normally opened.

The utility model discloses a technological effect and advantage:

1. the utility model discloses a cool off the bed die to the hot-air that will produce is discharged into material inslot portion as compressed air, is favorable to preventing the higher thermal fatigue that produces of bed die temperature, leads to the work piece to damage, and the compressed air temperature that prevents to get into the material bucket is lower, leads to the heat loss to produce the energy extravagant.

2. The utility model discloses a be equipped with the air pipe joint, be favorable to adopting the air pipe joint to connect when cooling off the bed die, be favorable to dismantling cooling tube, after preventing that the bed die from using, be not convenient for clean the arrangement.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic view of the structure of the part a in fig. 1 according to the present invention;

fig. 3 is a schematic view of the structure of the part B in fig. 1.

In the figure: 1. a mold frame; 2. an upper die; 3. a lower die; 4. a material barrel; 5. a delivery pipe; 6. an air inlet pipe; 7. a pressure relief pipe; 8. a first regulating valve; 9. a cooling hole; 10. a column block; 11. a gas pipe joint; 12. a nylon sealing ring; 13. cooling the air pipe; 14. screwing a sleeve; 15. a first seal ring; 16. a second seal ring; 17. a gas outlet header pipe; 18. a pressure relief valve; 19. a second regulating valve; 20. a cooling manifold; 21. a filter; 22. a cooling fan; 23. a plunger; 24. a spring; 25. and air leakage holes.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model provides a low-pressure casting die for a beam casting, which is shown in figures 1-3 and comprises a die frame 1, an upper die 2, a lower die 3 and a material barrel 4, wherein the material barrel 4 is arranged at the bottom of the die frame 1, a material conveying pipe 5 is arranged inside the material barrel 4, the top of the material conveying pipe 5 is communicated with the inside of the lower die 3, one side of the material barrel 4 is provided with an air inlet pipe 6, the air inlet end of the air inlet pipe 6 is connected with an external compressor to provide compressed air inside the material barrel 4, the other side of the material barrel is provided with a pressure relief pipe 7, a first adjusting valve 8 is arranged between the two ends of the air inlet pipe 6 and the pressure relief pipe 7, wherein the first adjusting valve 8 is controlled by a solenoid valve, when the internal pressure of the material barrel 4 reaches, the first adjusting valve 8 of the air inlet pipe 6 is automatically closed, a plurality of cooling holes, the cooling hole 9 is internally provided with a plurality of column blocks 10, the arrangement of the column blocks 10 is beneficial to preventing the lower die 3 from being unstable after the cooling hole 9 is formed, the two ends of the cooling hole 9 are in threaded connection with air pipe joints 11, the arrangement of the air pipe joints 11 is beneficial to being adopted for connection when the lower die 3 is cooled, the cooling air pipe 13 is convenient to disassemble, the lower die 3 is prevented from being inconvenient to clean and tidy after being used, nylon sealing rings 12 are respectively arranged on one sides of the air pipe joints 11 and the side surfaces of the lower die 3, a cooling air pipe 13 is inserted into one side of the air pipe joint 11 positioned outside the cooling hole 9, a rotary sleeve 14 is slidably sleeved on the surface of the cooling air pipe 13, the rotary sleeve 14 is in threaded connection with the surface of the air pipe joint 11, a first sealing ring 15 is arranged between the inner part of the rotary sleeve 14 and the air pipe joint 11, one end of the cooling air pipe 13 positioned inside the rotary sleeve, and a second sealing ring 16 is arranged between the lower die and the rotary sleeve 14, wherein the first sealing ring 15 and the second sealing ring 16 are both made of high-temperature resistant materials, a plurality of cooling air pipes 13 of the lower die 3 close to one side of the air inlet pipe 6 are connected with the same air outlet header pipe 17, one end of the air outlet header pipe 17 is communicated with the air inlet pipe 6, a pressure release valve 18 and a second adjusting valve 19 are sequentially arranged between the air outlet header pipe and the air inlet pipe from top to bottom, a plurality of cooling air pipes 13 of the lower die 3 close to one side of the pressure release pipe 7 are connected with the same cooling header pipe 20, a filter 21 and a cooling fan 22 are sequentially arranged between the two ends of the cooling header pipe 20 from top to bottom, the lower die 3 is cooled, and the generated hot air is discharged into the material tank as compressed air, so that the high temperature of the lower die 3 is favorable for preventing thermal fatigue, resulting in heat loss and energy waste.

Further, in the above technical scheme, a liquid material is contained in the material barrel 4, the air inlet pipe 6 and the pressure relief pipe 7 are both arranged above the liquid level of the liquid material, and one end of the bottom of the material conveying pipe 5 is arranged below the liquid level of the liquid material;

further, in the above technical solution, the pressure release valve 18 includes a housing, a plunger 23 is slidably disposed in the housing, a spring 24 is connected between the plunger 23 and one end of the housing, and air release holes 25 are formed in both sides of the housing, wherein an elastic force of the spring 24 is smaller than a pressure of the material barrel 4 when the pressure of the casting is reached, so that the cooling gas is discharged when the pressure of the casting in the material barrel 4 is reached or the first regulating valve 8 of the air inlet pipe 6 is closed;

further, in the above technical solution, the shape of the column block 10 is cylindrical, and the diameter of the column block 10 is smaller than 1/2 of the diameter of the cooling hole 9, so as to prevent the column block 10 from blocking the cooling air pipe 13;

further, in the above technical solution, the air outlet main pipe 17 and the air inlet pipe 6 are connected to each other at a front section of the first regulating valve 8, and an inner diameter of the air outlet main pipe 17 is smaller than an inner diameter of the air inlet pipe 6;

further, in the above technical solution, the second regulating valve 19 is a check valve, and the direction of the check valve is the flowing direction to the air inlet pipe 6, and the second regulating valve 19 is normally open.

This practical theory of operation:

referring to the attached drawings 1-3 of the specification, when casting at low pressure, the upper die 2 is pressed downwards by using a hydraulic machine, so that the upper die 2 and the lower die 3 are combined, then air pressure is applied to the interior of the material barrel 4 through the air inlet pipe 6, the pressure relief pipe 7 is closed, so that the pressure in the interior of the material barrel 4 is increased, so that the material enters between the upper die 2 and the lower die 3 through the material conveying pipe 5 for low-pressure forming, and when casting at low pressure, the cooling fan 22 is started, so that the cooling air is sucked into the cooling header pipe 20 through the cooling fan 22 and flows into the cooling holes 9 through the cooling air pipe 13, so that the lower die 3 is air-cooled, so that thermal fatigue caused by high temperature of the lower die 3 is prevented, the workpiece is damaged, and the cooled air enters the air inlet pipe 6 through the air outlet header pipe 17 and enters the interior of the material barrel 4 through the air inlet pipe 6, so that the, prevents the energy waste caused by heat loss due to low air temperature, increases the internal pressure of the air outlet main pipe 17 when the internal air pressure of the material barrel 4 reaches the pressure of a low-pressure casting, thereby pushing the plunger 23 to compress the spring 24, and discharging air through the air release hole 25, thereby achieving an air discharge effect, cooling the lower mold 3, when the air pipe joint 11 and the cooling air pipe 13 are installed, the air pipe joint 11 is connected with the cooling hole 9 by screw threads, the air pipe joint 11 is sealed with the lower die 3 by the nylon sealing ring 12, then one end of the cooling air pipe 13 is inserted into the air pipe joint 11, the rotary sleeve 14 is rotated to lead the rotary sleeve 14 to be connected with the air pipe joint 11 in a threaded way, and is sealed by the first sealing ring 15 and the second sealing ring 16, thereby preventing air leakage from occurring during the process of cooling the lower mold 3, and affecting the cooling effect.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. The utility model provides a crossbeam foundry goods low pressure casting mould, includes mould frame (1), goes up mould (2), bed die (3) and material bucket (4), its characterized in that: the material barrel (4) is arranged at the bottom of the die frame (1), a material conveying pipe (5) is arranged inside the material barrel (4), the top of the material conveying pipe (5) is communicated with the inside of the lower die (3), an air inlet pipe (6) is arranged at one side of the material barrel (4), a pressure relief pipe (7) is arranged at the other side of the material barrel, first adjusting valves (8) are arranged between the two ends of the air inlet pipe (6) and the pressure relief pipe (7), a plurality of cooling holes (9) are formed between the two ends of the inside of the lower die (3), a plurality of column blocks (10) are arranged inside the cooling holes (9), air pipe connectors (11) are in threaded connection with the two ends of the cooling holes (9), nylon sealing rings (12) are arranged on one side of the air pipe connectors (11) and the side of the lower die (3), and cooling air pipes (13) are inserted into one side of the air pipe, the cooling air pipe (13) is sleeved with a rotary sleeve (14) in a surface sliding manner, the rotary sleeve (14) is in surface threaded connection with an air pipe connector (11), a first sealing ring (15) is arranged between the interior of the rotary sleeve (14) and the air pipe connector (11), one end, located inside the rotary sleeve (14), of the cooling air pipe (13) is in a disc-shaped arrangement, a second sealing ring (16) is arranged between the cooling air pipe (13) and the rotary sleeve (14), a plurality of cooling air pipes (13), close to one side of an air inlet pipe (6), of a lower die (3) are connected with the same air outlet header pipe (17), one end of the air outlet header pipe (17) is communicated with the air inlet pipe (6), a pressure release valve (18) and a second adjusting valve (19) are sequentially arranged between the air outlet header pipe and the air pipes from top to bottom, and a plurality of cooling air pipes (13), close to, and a filter (21) and a cooling fan (22) are sequentially arranged between the two ends of the cooling main pipe (20) from top to bottom.

2. The low-pressure casting die for the cross beam casting, as claimed in claim 1, wherein: liquid materials are contained in the material barrel (4), the air inlet pipe (6) and the pressure relief pipe (7) are both located above the liquid level of the liquid materials, and one end of the bottom of the material conveying pipe (5) is located below the liquid level of the liquid materials.

3. The low-pressure casting die for the cross beam casting, as claimed in claim 1, wherein: the pressure release valve (18) comprises a shell, a plunger (23) is arranged in the shell in a sliding mode, a spring (24) is connected between the plunger (23) and one end of the shell, and air leakage holes (25) are formed in two sides of the shell.

4. The low-pressure casting die for the cross beam casting, as claimed in claim 1, wherein: the shape of the column block (10) is cylindrical, and the diameter size of the column block (10) is smaller than 1/2 of the diameter size of the cooling hole (9).

5. The low-pressure casting die for the cross beam casting, as claimed in claim 1, wherein: the gas outlet main pipe (17) and the gas inlet pipe (6) are located at the front section of the first regulating valve (8) and are connected, and the inner diameter of the gas outlet main pipe (17) is smaller than that of the gas inlet pipe (6).

6. The low-pressure casting die for the cross beam casting, as claimed in claim 1, wherein: the second regulating valve (19) is arranged as a one-way valve, the direction of the second regulating valve is towards the flowing direction of the air inlet pipe (6), and the second regulating valve (19) is normally opened.